Cold helmet



FIG. 1 is a side view of a cold helmet showing my new design.

FIG. 2 is a front view of the cold helmet shown in FIG. 1.

FIG. 3 is a back view of the cold helmet shown in FIG. 1; and,

FIG. 4 is a top view of the cold helmet shown in FIG. 1.

The bottom is unornamented. The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a cold helmet, as shown and described. 